doc/v618/candleplotstack_8C.html

void candleplotstack()

{

   gStyle->SetTimeOffset(0);

   TRandom *rng       = new TRandom();

   TDatime *dateBegin = new TDatime(2010,1,1,0,0,0);

   TDatime *dateEnd   = new TDatime(2011,1,1,0,0,0);

   int bins = 1000;

   TH2I *h1 = new TH2I("h1","Machine A",6,dateBegin->Convert(),dateEnd->Convert(),bins,0,1000);

   TH2I *h2 = new TH2I("h2","Machine B",6,dateBegin->Convert(),dateEnd->Convert(),bins,0,1000);

   TH2I *hsum = new TH2I("h4","Sum",6,dateBegin->Convert(),dateEnd->Convert(),bins,0,1000);


   float Rand;

   for (int i = dateBegin->Convert(); i < dateEnd->Convert(); i+=86400*30) {

      for (int j = 0; j < 1000; j++) {

         Rand = rng->Gaus(500+sin(i/10000000.)*100,50); h1->Fill(i,Rand); hsum->Fill(i,Rand);

         Rand = rng->Gaus(500+sin(i/12000000.)*100,50); h2->Fill(i,Rand); hsum->Fill(i,Rand);

      }

   }


   h2->SetLineColor(kRed);

   hsum->SetFillColor(kGreen);

   TCanvas *c1 = new TCanvas();


   THStack *hs = new THStack("hs","Machine A+B");

   hs->Add(h1);

   hs->Add(h2,"candle2");

   hs->Add(hsum, "violin1");

   hs->Draw("candle3");

   hs->GetXaxis()->SetNdivisions(410);


   gPad->SetGrid(1,0);


   hs->GetXaxis()->SetTimeDisplay(1);

   hs->GetXaxis()->SetTimeFormat("%m/%y");

   hs->GetXaxis()->SetTitle("Date [month/year]");


   c1->Modified();


   gPad->BuildLegend(0.75,0.75,0.95,0.95,"");

}

kRed
@ kRed
Definition: Rtypes.h:64

kGreen
@ kGreen
Definition: Rtypes.h:64

sin
double sin(double)

gStyle
R__EXTERN TStyle * gStyle
Definition: TStyle.h:406

gPad
#define gPad
Definition: TVirtualPad.h:286

TAttAxis::SetNdivisions
virtual void SetNdivisions(Int_t n=510, Bool_t optim=kTRUE)
Set the number of divisions for this axis.
Definition: TAttAxis.cxx:229

TAttLine::SetLineColor
virtual void SetLineColor(Color_t lcolor)
Set the line color.
Definition: TAttLine.h:40

TAxis::SetTimeDisplay
virtual void SetTimeDisplay(Int_t value)
Definition: TAxis.h:161

TAxis::SetTimeFormat
virtual void SetTimeFormat(const char *format="")
Change the format used for time plotting.
Definition: TAxis.cxx:1002

TCanvas
The Canvas class.
Definition: TCanvas.h:31

TDatime
This class stores the date and time with a precision of one second in an unsigned 32 bit word (950130...
Definition: TDatime.h:37

TDatime::Convert
UInt_t Convert(Bool_t toGMT=kFALSE) const
Convert fDatime from TDatime format to the standard time_t format.
Definition: TDatime.cxx:181

TH1::Fill
virtual Int_t Fill(Double_t x)
Increment bin with abscissa X by 1.
Definition: TH1.cxx:3258

TH2I
2-D histogram with an int per channel (see TH1 documentation)}
Definition: TH2.h:209

TH2::Fill
Int_t Fill(Double_t)
Invalid Fill method.
Definition: TH2.cxx:292

THStack
The Histogram stack class.
Definition: THStack.h:31

THStack::Draw
virtual void Draw(Option_t *chopt="")
Draw this multihist with its current attributes.
Definition: THStack.cxx:445

THStack::Add
virtual void Add(TH1 *h, Option_t *option="")
add a new histogram to the list Only 1-d and 2-d histograms currently supported.
Definition: THStack.cxx:359

THStack::GetXaxis
TAxis * GetXaxis() const
Get x axis of the histogram used to draw the stack.
Definition: THStack.cxx:601

TNamed::SetTitle
virtual void SetTitle(const char *title="")
Set the title of the TNamed.
Definition: TNamed.cxx:164

TRandom
This is the base class for the ROOT Random number generators.
Definition: TRandom.h:27

TRandom::Gaus
virtual Double_t Gaus(Double_t mean=0, Double_t sigma=1)
Samples a random number from the standard Normal (Gaussian) Distribution with the given mean and sigm...
Definition: TRandom.cxx:263

TStyle::SetTimeOffset
void SetTimeOffset(Double_t toffset)
Change the time offset for time plotting.
Definition: TStyle.cxx:1655

c1
return c1
Definition: legend1.C:41

h1
TH1F * h1
Definition: legend1.C:5

hsum
Definition: hsum.py:1